On Fri, 2005-04-15 at 18:18 +0200, Wolfgang Woehl
wrote:
Paul Davis <paul(a)linuxaudiosystems.com>om>:
What are
the constraints for the HDSP 9652's apparent minimum buffer
size of 64 frames? Is it the FPGA? Is it the firmware?
whatever stuff is programmed into the FPGA and/or the rest of the
board, it cannot be set to generate interrupts at smaller intervals
than this.
Paul, would you think it's worth trying to find out deeper detail on
this? Me thinking if the 9652 can do 96khz/64 frames (1.33 msecs) it
can actually go quicker than the 44.1khz/64 frames (2.9 msecs) setup.
Is there any potential or would one only waste time?
Well, what happens if you just change the driver to allow 44.1/32? It's
probably one or two lines of code.
you guys are not understanding me. when you set the buffer size, you
are setting a register value in the HDSP. the h/w doesn't understand
any values lower than 64. in fact, it not only doesn't understand, it
has no way to even request it.
--p